Filter.



- '.P'ATENTED SEPT. 29, 190s. E. W. -L:s*f.NPPLUGi FILTER.

APPLICATIGN'HLBD JULY z, 1902.

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` UNITED STATES atented September 29, 1903;.

PATENT OFFICE.

EZRA w.l HASENPFLUG, or Ens'r oLEvELAND, omo, AssieNoR To TEE CHAMPION SAFETY LOCK TION vOF OHIO. i

COMPANY, OF GENEVA, OHIO, A CORPORA- FILTER.l

' SPECIFICATION forming part of Letters Patent N o. 740,381, dated September 29., 1903.

` Application led July 2, 1902. Serial No. 114,081. (No modal.)

To all whom, it may concern.-

Be it known that LEZRA W. HASENPELUG,

l a citizen of the United States of America,and

a resident of East Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Fil- Iters, (Case No. 1,) of which the following is a specification, reference being had to the accompanying sheet of drawings, forming a part thereof.

My invention relates to improvements in filters, and has for its object the provision in this class of apparatus of a readily-separable and highly eici'ent duid tight. joint and mounting for the principal parts thereof, at the same time materially reducing the cost of manufacture, simplifying the arrangement of the filter parts, and obtaining a novel and distinctly-advantageous controllable connection with the supply-pipe.

In order to secure good results from lters, it is well known that the filtering medium must be maintained in a clean and porous condition, which involves more orless frequent 'attention to said filtering medium. The majority of filters are so constructed or arranged that the filtering medium may be withdrawn from the lter-chamber in order that the former may becleansed, the connection or joint therebetween being made huid-tight by a compressiblev packing clamped between two otherwise abutting surfaces by means of screw-pressure. Although this arrangement embodied in various types of apparatus is initially entirely efficient, it iscoupled with the disadvantages of being unhandy, in that the screw-tightened joint requires considerable time and attention each time the ilter is opened and closed. The threads are worn and stripped in effecting sufficiently tight closures and not infrequently become so iirmly seated as to require such force to start the joint as is likely to damage the iilter. In most instances it is desirable that an ample and unfiltered 'supply of water he available at the'same point that thereof being broken away. Vtical sectional view of the complete device on a relatively small water-filter adapted to be attached directly to the su pply-pipe and may be described in brief as comprising a T connection carrying a three-way cock communieating with the cylindrical filter-chamber, which is open at the bottom. The filter-tube is readily inserted within the chamber from below, said tube being mounted upon a supporting-base having a flexible packing-ring of peculiar formadapted 'to lit within the open mouth of said lilter-chamber and engage its inner walls when the tube is secured in position by means of its readily-released supporting-button.l The packing-ring is so constructed that under the influence of fluidpressure 'Within the chamber said ring is flexed into closer and closer engagement with the lower inner wall of the filter-chamber and with its support as well,y so that a highlyefficient joint is formed which admits of the easiest removal and insertion of the ltering medium.

My said invention may be more readily eX- plained and understood by making reference to the accompanying drawings of said filter, whereinl VFigure l is a View in elevation of the upper portion of the filter, the lower portion Fig. 2 isa vera slightly-reduced scale.k Fig. 3 is a detailed view, in vertical section, of the upper portions. Fig. 4: is a similar view of the lower portions; and Fig. 5, a top view of the filter, showing the central part in horizontal section.

Like parts have throughout said figuresv been indicated by the same character of reference.

A cylindrical casing ci, open and slightly iiaring interiorly at the bottom and carrying at the top a chambered cap ctx, forms the iilterchamber wherein the filter-tube b, ofV Tripoli stone or other suitable material, is carried upon its mounting or base portion c. Attached at one side of the filter-chamber is a T connection d, mounting a rotatable threeway cock e, its upper end having a threaded half-hose connection d for attachment to the supply-pipe, while within the mouth or faucetopening d2 at the lower end of said T connection is a netting or strainer d3. Said cock is IDO adapted, as will readily be seen, alternatively to cut off the fiow of water from the watersupply pipe, to permit its direct flow through the T connection and its faucet-opening d2, or to divert the passage of the water through the filter-chamber and the filtering medium. The base portion c is secured to the filtertube by means of a central rod b', threaded at either end, which screws into t-he head f and a lug c upon the former, fluid-tight connection between these parts being secured by means of flat rubber washers c", interposed between the filter-tube and its mountings. The headfis provided with a button f', laterally cut awa-y and adapted to be inserted within the slot a', cut beneath the cap d ,'sur mounting the filter-chamber. By rotating the filter-tube one-quarter turn when the-supporting-button is inserted within theslot it will be seen that said tube may normally be securely mounted within the filter-chamber, although very readily removable therefrom.

Loosely mounted upon the base portion c is the packing-ring g, formed of rubber or other suitable material, which with the said base portion of the filter-tube mounting forms an effective closure for the filter-chamber, the mouth of which is completely filled thereby. The base portion has a central raised boss c2 and au encircling annular bed c3 for the accommodation of the packing ring. Said packing-ring or closure part g is of peculiar form the better to insure an effective iiuidtight joint between the filter parts. Normally this annulus of rubber when seen in cross-section is somewhat convex upon its lower face g2, while its side walls are outwardly flaring` to form a continuous thin edge orlipg alongits upper circumference. These features for the purposesk of illustration are slightly exaggerated in Fig. 2. Upon the access of pressure to the filter-chamber, however, the packing-ring is iiexed, so that the annular portion c3 of the supporting-base is engaged by the lower face of the packingring and the inner walls of themOuth-of the filter-chamber are close pressed by the resilient lip or edge g', said ring, as it were, rocking upon its convex face into close engage` ment with the two separable filter parts. The effectiveness of this jointis merelyincreased v by any additional pressure within the chamber and the water must perforce seek passage to the external air through the filter-tube b and the ducts c4 c5, provided in the supporting-base.

In Fig. 2 the packing-ring is shown in its normal position, the cock being turned to afford an unrestricted flow of unfiltered Water from the faucet-opening in the T connection.

Fig. 4 shows the cock turnedo admit water under pressure to the filter-chamber, the packing-ring or closure part being liexed into close engagement with the mouth of the filter-chamber and with the base c.

When it is necessary or desirable to clean the filter, the cock is given one-half turn from` the position shown in Fig. 4, thus cutting olf the water-supply, and the filter-tube and mountings are turned 011 their axis one-quarter around, thereby releasing the supportingbutton f from its engaging position within the cap, (see Fig. 3,) whereupon the filter-tube and its connected parts may very readily be slipped down and out of the filterchamber. The accumulated sediment and deposit may at once and most conveniently be washed therefrom by opening the cock, as shown in Fig. 2, permitting the water to lfiow from the faucet-opening ,over the detached lter-tube and its mounting held beneath the same, any remaining impurities being scraped or rubbed from the iilter-tube, whereupon it may be returned to place within the filterchamber. This provides practically all the advantages of a self-flushing filter, since the steps outlined need take but a few moments time, and the filter meanwhile is inspected and its cleanliness ascertained. The filter affords no opportunity for the collection of filth and germs therein.

It will at once beappreciated that the described construction is simple and cheap and avoids the disadvantages already referred to herein. Filters or other fluid chambers equipped with the closure device shown will be found to have a highly-efficient iuid-tight joint, permitting the easiest and promptest separation and reconnection of the respective parts.

The details herein set forth will admit of modifications Without departing from the spirit of my invention, since I have shown but a single structure embodying the simplest expression of the same.

I accordingly claim as new and desire to secure by Letters Patent the following:

1. In combination in a filter device, the cas ing forming the receiving-chamber, the removable closure or base portion, the filtering medium removably mounted in the chamber, and the flexible packing-ring or closure part having exteriorly-flaring sidewalls terminating in a thin edge or rim, adapted to engage the inner walls of the casing and the base portion, a convex bearing-face being provided and serving to mount the packing-ring upon the base portion, whereby under pressure the packing-ring is rocked to form a Huid-tight joint between the separable parts, substantially as set. forth.

2. In combination, the casing forming a duid-chamber, of the removable base portion or closure therefor, and the flexible packingring mounted therebetween; the same having a convex lower face and Haring side walls adapted respectively to engage said base portion and the inner walls of the Huid-chamber and to be flexed under pressure'within the chamber, into closer engagement therewith to form a iuid-tight joint, substantially as set forth.

3. In a filtering device, the combination IOO IIO

with the tubular ilter-ehalmberhaving an open month for the insertion of the ltering medium, of a filter-tube and its mounting adapted to be slipped into and out of said chamber, and a flexible packing-ring or elosure part having a convex lower face and fiaring side Walls adapted respectively to engage the mounting of the filter-tube and the inner Walls of the mouth of said filter-chamber,

1o whereby a.- luid-tight joint is formed'between the removable filter parts upon the access of pressure to said miser-chamber, substantially as seb forth.

Signed ab Cleveland this 30th day of J une,

1902, in the presence of two subscribing Wit- I5 messes. e

EZRA W, HASENPFLUG.

Witnesses: e

CHARLES S. BEARDSLEY, ALBERT LYNN LAWRENCE. 

